Database: Ace Shock Analysis
Event ID: 20011280931
Observation time: 05/08/2001 128.39701 0931 [UT]
|
|
General
Information (About, Top)
| Year |
2001 |
| Fractional day of year |
128.397014 |
| Arrival time of shock [seconds of day] |
34302.0 ± 16.0 |
| Shock type |
FF |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
0.035 |
| Y GSE location of spacecraft [Re] |
0.004 |
| Z GSE location of spacecraft [Re] |
-0.004 |
| Upstream plasma points selected for analysis |
0009 |
| Upstream field points selected for analysis |
0035 |
| Downstream plasma points selected for analysis |
0009
|
| Downstream field points selected for analysis |
0043 |
| Minimum chisq/dof for RH8,RH9,RH10 |
7.27, 8.93, 9.69 |
Event added to database
|
Sat Apr 30 21:51:14 2005
|
Event last processed
|
Tue May 3 13:59:17 2005
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
0.009 ± 0.001
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-363.0 ± 2.4 |
-389.0 ± 7.2 |
| Vy GSE [km/s] |
3.0 ± 2.3 |
-24.1 ± 5.0 |
| Vz GSE [km/s] |
1.8 ± 3.2 |
18.3 ± 3.4 |
| Wi [km/s] |
42.9 ± 1.0 |
46.6 ± 1.7 |
| We [km/s] |
1356.4 ± 32.8 |
1474.1 ± 52.7 |
| Ni [n/cc] |
3.5 ± 0.3 |
6.6 ± 0.6 |
| Bx GSE [nT] |
4.8 ± 0.2 |
5.3 ± 1.3 |
| By GSE [nT] |
-4.2 ± 0.6 |
-4.6 ± 1.3 |
| Bz GSE [nT] |
-1.2 ± 0.5 |
-4.6 ± 2.8 |
Plasma Beta
|
0.316 ± 0.310
|
0.378 ± 0.381
|
Sound Speed [km/s]
|
55.37 ± 1.34
|
60.18 ± 2.15
|
Alfven Speed [km/s]
|
77.14 ± 6.13
|
75.94 ± 3.22
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.935 ± 0.252 |
0.315 ± 0.694 |
0.162 ± 0.160 |
9.31 ± 35.45 |
161.40 ± 42.46 |
| VC |
-0.630 ± 0.138 |
-0.667 ± 0.131 |
0.397 ± 0.375 |
23.41 ± 6.46 |
226.64 ± 11.53 |
| MX1 |
-0.938 ± 0.204 |
-0.207 ± 0.894 |
0.277 ± 0.270 |
16.09 ± 11.03 |
192.46 ± 54.60 |
| MX2 |
-0.559 ± 0.439 |
-0.808 ± 0.306 |
0.185 ± 0.183 |
10.67 ± 15.68 |
235.35 ± 31.07 |
| MX3 |
-0.652 ± 0.164 |
-0.737 ± 0.147 |
0.178 ± 0.176 |
10.23 ± 16.84 |
228.51 ± 12.44 |
| RH08 |
-0.875 ± 0.009 |
-0.400 ± 0.017 |
0.274 ± 0.267 |
15.89 ± 1.03 |
204.57 ± 1.12 |
| RH09 |
-0.851 ± 0.037 |
-0.426 ± 0.064 |
0.307 ± 0.297 |
17.89 ± 4.00 |
206.57 ± 4.24 |
| RH10 |
-0.854 ± 0.037 |
-0.427 ± 0.064 |
0.296 ± 0.287 |
17.22 ± 4.00 |
206.57 ± 4.24 |
| Average |
-0.787 |
-0.420 |
0.260 |
15.089 |
207.758 |
| Median |
-0.851 |
-0.426 |
0.277 |
16.087 |
206.574 |
| Deviation |
0.149 |
0.358 |
0.080 |
4.780 |
23.738 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
22.5 ± 4.9 |
381.9 ± 15.3 |
1.92 ± 0.26 |
| VC |
83.8 ± 4.7 |
312.3 ± 13.5 |
1.92 ± 0.26 |
| MX1 |
52.3 ± 4.7 |
412.9 ± 14.2 |
1.92 ± 0.26 |
| MX2 |
85.8 ± 4.8 |
282.5 ± 13.8 |
1.92 ± 0.26 |
| MX3 |
87.7 ± 4.8 |
318.0 ± 13.7 |
1.92 ± 0.26 |
| RH08 |
63.9 ± 4.7 |
396.1 ± 13.9 |
1.92 ± 0.26 |
| RH09 |
65.7 ± 4.7 |
388.6 ± 13.8 |
1.92 ± 0.26 |
| RH10 |
65.7 ± 4.7 |
389.5 ± 13.8 |
1.92 ± 0.26 |
| Average |
65.9 |
360.2 |
1.92 |
| Median |
65.7 |
388.6 |
1.92 |
| Deviation |
21.6 |
48.3 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
41.1 ± 3.2 |
48.1 ± 0.9 |
71.3 ± 5.7 |
81.9 ± 5.2 |
0.85 ± 0.06 |
0.50 ± 0.04 |
| VC |
84.9 ± 1.9 |
4.9 ± 0.1 |
8.4 ± 0.7 |
94.9 ± 4.7 |
17.40 ± 0.48 |
0.90 ± 0.05 |
| MX1 |
72.4 ± 2.7 |
28.8 ± 0.7 |
47.1 ± 3.7 |
90.6 ± 4.7 |
2.52 ± 0.07 |
0.80 ± 0.04 |
| MX2 |
81.7 ± 1.5 |
3.3 ± 0.1 |
5.6 ± 0.4 |
95.0 ± 4.7 |
25.12 ± 0.83 |
0.86 ± 0.05 |
| MX3 |
83.2 ± 1.5 |
1.8 ± 0.0 |
3.2 ± 0.3 |
95.0 ± 4.7 |
45.35 ± 1.41 |
0.88 ± 0.05 |
| RH8 |
79.2 ± 2.3 |
20.2 ± 0.5 |
33.9 ± 2.7 |
92.9 ± 4.7 |
3.93 ± 0.10 |
0.85 ± 0.05 |
| RH9 |
80.3 ± 2.3 |
18.8 ± 0.4 |
31.7 ± 2.5 |
93.2 ± 4.7 |
4.26 ± 0.11 |
0.86 ± 0.05 |
| RH10 |
80.1 ± 2.3 |
18.8 ± 0.4 |
31.7 ± 2.5 |
93.2 ± 4.7 |
4.26 ± 0.11 |
0.86 ± 0.05 |
| Average |
75.4 |
18.1 |
29.1 |
92.1 |
13.0 |
0.8 |
| Median |
80.3 |
18.8 |
31.7 |
93.2 |
4.3 |
0.9 |
| Deviation |
14.3 |
15.5 |
23.3 |
4.4 |
15.6 |
0.1 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
22.7 ± 7.1 |
51.4 ± 1.7 |
70.2 ± 3.0 |
82.2 ± 3.1 |
0.44 ± 0.13 |
0.27 ± 0.07 |
| VC |
43.9 ± 5.6 |
5.1 ± 0.2 |
8.3 ± 0.4 |
96.8 ± 3.4 |
8.55 ± 0.97 |
0.45 ± 0.05 |
| MX1 |
37.8 ± 6.9 |
30.3 ± 1.0 |
46.4 ± 2.0 |
92.0 ± 3.3 |
1.24 ± 0.20 |
0.41 ± 0.06 |
| MX2 |
42.3 ± 5.5 |
3.4 ± 0.1 |
5.5 ± 0.2 |
96.9 ± 3.4 |
12.34 ± 1.50 |
0.44 ± 0.05 |
| MX3 |
43.3 ± 5.8 |
1.9 ± 0.1 |
3.1 ± 0.1 |
96.9 ± 3.4 |
22.45 ± 2.73 |
0.45 ± 0.05 |
| RH8 |
41.2 ± 6.6 |
21.2 ± 0.7 |
33.4 ± 1.4 |
94.6 ± 3.4 |
1.93 ± 0.27 |
0.43 ± 0.06 |
| RH9 |
41.6 ± 6.5 |
19.8 ± 0.7 |
31.3 ± 1.3 |
94.9 ± 3.4 |
2.10 ± 0.28 |
0.44 ± 0.06 |
| RH10 |
41.5 ± 6.5 |
19.8 ± 0.7 |
31.2 ± 1.3 |
94.9 ± 3.4 |
2.09 ± 0.29 |
0.44 ± 0.06 |
| Average |
39.3 |
19.1 |
28.7 |
93.6 |
6.4 |
0.4 |
| Median |
41.6 |
19.8 |
31.3 |
94.9 |
2.1 |
0.4 |
| Deviation |
7.0 |
16.5 |
22.9 |
4.9 |
7.7 |
0.1 |
Survey interval (About, Top)
Selected
data (About, Top)
|
Key plasma parameters
|
Velocity
|
Magnetic Field
|
Simple
Methods
(About, Top)
Rankine Chi^2
Contour (About, Top)
Shock
Speed (About, Top)
Theta Bn (About, Top)
Mach Numbers (About, Top)
Page updated Mon Apr 13 08:55:21 2009
Michael L Stevens
(mstevens@cfa.harvard.edu)
| 
